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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

Ex 6.1, 4 In the given figure, if x + y = w + z, then prove that AOB is a line. We know that x + y + w + z = 360° (x + y) + (w + z) = 360° (x + y) + (x + y) = 360° 2(x + y) = 360° (x + y) = (360°" " )/2 x + y = 180° Since, w + z = x + y w + z = 180° Now, x + y = 180° & w + z = 180° From Axiom 6.2: If the sum of two adjacent angles is 180° , then non-common arms form a line (Reverse Linear Pair) ∴ AOB is a straight line Hence proved

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.